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- 25 Aug 2007
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Hi all
I've got a bit of a problem with our central heating. It comes on all the time that the hot water is on. I've narrowed the problem down to the 3 way value (a Danfoss HSA3). I removed the actuator from the valve and turned the hot water and central heating on and off and the actuator moved to the positions I expected.
I re-attached the actuator to the valve and did the same test, but it didn't move, but it sounded like it was trying to.
Now, I know that everything else is fine as the actuator does what I expected it to, but it appears that it doesn't have the necessary umph to turn the valve itself. Two possible thoughts:
The actuator is on the way out, doesn't have enough power to turn the valve. Solution is to replace the actuator.
The valve is too sticky and this means that the actuator can't turn it.
Can anyone tell me if I should be able to turn the valve by hand. It's quite stiff, and I need to use a pair of gas pliers to turn it. Is this too stiff and this is the cause of the problem, or is this normal for this valve?
Cheers
Steve
I've got a bit of a problem with our central heating. It comes on all the time that the hot water is on. I've narrowed the problem down to the 3 way value (a Danfoss HSA3). I removed the actuator from the valve and turned the hot water and central heating on and off and the actuator moved to the positions I expected.
I re-attached the actuator to the valve and did the same test, but it didn't move, but it sounded like it was trying to.
Now, I know that everything else is fine as the actuator does what I expected it to, but it appears that it doesn't have the necessary umph to turn the valve itself. Two possible thoughts:
The actuator is on the way out, doesn't have enough power to turn the valve. Solution is to replace the actuator.
The valve is too sticky and this means that the actuator can't turn it.
Can anyone tell me if I should be able to turn the valve by hand. It's quite stiff, and I need to use a pair of gas pliers to turn it. Is this too stiff and this is the cause of the problem, or is this normal for this valve?
Cheers
Steve